“Development of a Heading Technique Training Model in Futsal Games for PJKR Students of the 2024 Class of Tadulako University, Palu”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, vol. 18, no. 1, Feb. 2026, pp. 0979-86, https://competitor.idjournal.eu/index.php/competitor/article/view/587.